Finding the Third Proportional to 238,468 and 381,030

Step by Step Solution

1. Step 1: Write the proportion equation
   238,468 : 381,030 = 381,030 : x
2. Step 2: Convert to fraction form
   238,468/381,030 = 381,030/x
3. Step 3: Cross multiply
   238,468x = 381,030 × 381,030
4. Step 4: Simplify right side
   238,468x = 145,183,860,900
5. Step 5: Solve for x
   x = 145,183,860,900/238,468
6. Step 6: Final answer
   x = 608,819.05